Coaster-brake.



H. E. VAN NESS & W. T. KNEALE.

GOASTEB. BRAKE.

APPLICATION FILED 1350.23. 1911.

lgjgl@ Patented Oct. 22, 1912 www unirse STATES PATENT oriucn.

HENRY E. VAN NESS AND WILLIAM T. KNEALE, OF ELMIRA, NEW YORK.

COASTER-BRAKE Specification of Letters Patent.

Patented Oct. 22, 1912.

Application filed `December 23, 1911. Serial No. 667,481.

To all whom it may concern:

Be it known that we, HENRY E. VAN NESS and IVILLIAM T. KNEALE, citizens of the United States, residing at Elmira, county of Chemung, and State of New York, have invented certain new and useful Improvements in Coaster-Brakes, of which theY following is a specification.

Y'This invention relates 'to coaster brakes for bicycles, etc., and has for its object the construction of a brake which will be simple and very elective in action and which will also have relatively few parts subjected to excessive wear and the wearing parts of which 'will be so arranged that the wear will be uniform.

The novel features of the invention `will be apparent from the following description, taken in connection with the accompanying drawings, in which,

Figure 1 is a longitudinal cross section of the invention and Figs. 2 to 11 show detailed views of the various parts of the invention.

Referring to the drawings, it will be seen that the invention comprises the usual axle 20, which is screw-threaded at both ends yto receive the Aball-bearing cones 21 and 22. A sprocket wheel 23 is secured to a sleeve 24,- as by means of the screw-threads 25 and the lock-nut 26. The sleeve 24 is rotatably mounted on the cone 22 by means of the ball-bearing 27. A wheel-hub 28 is rotatably mounted on the bearing cone 21 andthe sleeve 24 by means of the ball-bearings 29 Tand 30 respectively. The sleeveY 2 4 is interiorly screw-threaded as at 31 the threads thereof being in engagement with corresponding external threads on one end of the sleeve 32, which is rotatably mounted on the axle 20. The sleeve 32 is provided with a conical flange 33 which is adapted to engage a conical surface 34 on the linterior of then hub 28. The interior of the flange 33 is also conically formed to engage the outer conlcal surface at the end 35 of the sleeve 36. ,TheI

sleeve 32,-this` extension being of somewhat l .projections 37 above referred to.

smaller diameter than the recess 39, whereby an; annular space is provided for a spring slip-ring 41, which has an inwardly turned end 42 engaging a suitable slt in the extension 40, whereby the' ring rotates with the sleeve 32.

The ring 41 tends to expand so as to en; gage the sleeve 36. The sleeve 36 `is also provided with an external conical surface and the cone 21 has on its inner end a similar surface 44, oppositely arranged with respect to the surface'43. The surface 44, however, is divided into"two parts `by the Semi-circular brake members or sleeves 45 are provided with interior conical surfaces 46 which are adaptedto coperate with the surfaces 43 and 44. The sleeves 45 are also provided with the end notches 45 which receive the projections 37 on the cone 21 and prevent the sleeves from rotating. The outer cylindrical surface of the members 45 is provided with suitable grooves 47 to receive and distribute a lubricant and alsov have grooves 48, which receive a spring 49 which tends to hold the brake members together.

Itwill be observedfrom Fig. 1 that the outer diameter of the members 45 is slightly smaller than the internal diameter )of the hubwhereby these members are adapted to engage the inner surface of the hub when. they are separated. j

'Ihe operation 'of the parts above described is as follows :In normal driving the sleeve 32 is drawn to its outward limit where the flange 33 engages the conical surface 34 of the hub, by means of the screw-threads 31. When the sprocket-wheel 23 is given a backward rotation, the sleeve 32 will be moved inwardlyuntil the flange 33 engages the extension 35 o n the sleeve 36 and-thus disengaged from the hub 28. As the sleeve 32 continues to move inwardly the brake members 45 will be separated as the conical surfaces 43 and 44 are made to approach each other. In this way the brake members 45 are pressed against the interior ofathe hub 28 and as the brake members are held stationary by the projections 37 on the cone 21, there willbe a--retar.dalfcn of the' hub. When the sprocket-wheel is rotated forwardly again the sleeve 32 will be moved outwardly until the iiange 33 engages the conical surface 34 and thereby drive the huhy 28 and the spring 49 will drawthe brake i members out of contact with the interior of the hub.

In order to cause the sleeve 32 to rotate 5 relatively to the sprocket-Wheel, the slipring 4l is provided, this ring tending to hold the sleeve 3Q stationary as the sprocket wheel is turned, owing tovthefrictional engagement between the ring and the sleeve 36. -As thus constructed, it will be seen that both the cone 2l and the sleeve 36 are alivays stationary except for the axiall'movement of the latterand therefore there is no relative rotation between either of these parts and the brake members 45 so that the only wear Ito which the surfaces 43, 44 and 46 are subjected is that'due to the sliding of one part relatively tov another. In a device of this l"nd this Wear Would be inappreciableas compared with the Wear between the outer surface of the brake members 45 and the interior of the hub 28, so

that both ends of the members 45 Will al- Ways be uniformly moved outwardly and there'Will be uniform 'braking action over the entire surface of the brake members.

Inv accordance with the provisions of the patent statutes AWe have described the principles of our invention and also the prestood that various changes may be made in the details thereof without departing from the spirit of the invention, as defined in the following claims.

Having thus described our invention-what We claim is:

l. In a coaster a stationary member, a driven member, able sleeve provided with an inclined surface, a corresponding inclined surface on said stationary member, a` member engaging said inclined surfaces and arranged to be pressed against the interior of the driven member by an axial movement of said sleeve, means for connecting said driving and driven members and for moving said sleeve .axiall and frictional means for preventing vsaid last-mentioned means from" rotating with the driving member when disconnected from the driven member.

2. In a coaster brake, the combination of a stationaryfaxle, amember on one end/,of the axle provided with an inclined surface, a longitudinally movable sleeve carried by the axle and held againstrotation thereon and provided With an inclined surface, a driving member on the otherend of the axle, a hub rotatably mounted on said members, a member arranged within the hub and engaging said inclined surfaces and adapted to be moved into engagement with the hub by moving said sleeve, a member coperatin with the driving membery for moving 55 said sleeve, and adapted to connect said brake, the combination of driving member, a

fcrred form thereof, but it vvill be under-l frictional connection a non-rotatable axially movdriving and driven members, and frictional means for preventing said last mentioned member from rotating With the driving member when disconnected from the driven member.

3. In a coaster brake, the combination of a stationary axle, bearing-cones on said axle, one of said cones having an inclined surface at its inner end, a driving member rotatably mounted on the other of said cones, a driven member rotatably mounted on the driving member and one of said cones, a non-rotatable member arranged between said cones and provided with an inclined surface, a member engaging'said inclined surfaces and adapted to be moved radially into contact with said driven member, and means having frictional connection with a non-rotatable part and adapted to connect said non-rotatable member with said driving member or said driven member With said driving member. v

4. In a coaster brake, the combination of a stationary axle, a driving member, a driven member,'a brakemember arranged Within said driven member' and provided with opposit-ely arranged inclined surfaces, non-rotatable members having inclined surfacesengaging the inclined surfaces on said brake member, one of said non-rotatable members being axially movable to press said brake member against the interior surface of said driven member, and means having With a non-rotatable part and adapted to bemOVed axially by the driving member into enga-gement With said axially` movable member or said driven member.

In a coaster brake, the combination of a stationary axle, a driving member, a driven member, aplurality of brake members arranged 'vvithin said driven member and provided With oppositely arranged inclined surfaces, non-rotatable members having interlocking means and inclined surfaces engaging the inclined surfaces on said brake members, bers being axiallymovable tol press said brake members against the interior surface of'the driven member, a rotatably mounted member having means adapted to cooperate with the driven member tovdrive the latter and said member being also adapted to be moved axially to move said axially Ymovable member, frictional means connecting said robrake, the combination of a stationary axle, a driving member, a

hub,

brake members arranged Within the hub and y adapted to engage the inner surface thereof,

non-rotatable members mounted on the axle one of said non-rotatable mem .12o tatably mounted member with a non-rota-l and having inclined surfaces'coperating with corresponding surfaces on the brake members sothat'the latter are moved into engagement With said hub by moving one of the non-rotatable members axially, spring means for moving the brake members out of engagement With the hub, an axially movable rotatable sleeve having a screw-thread connection with the driving member and means adapted to cooperate with the hu'b to drive the latter, and a connection between Said axially movable member and said -sleeve adaptedto permit relative rotation of these parts. I

7. In a coaster' brake, the combination of a stationary axle, thereon, a driving member mounted on one of said cones, a hub rotatably mounted on the driving member and the other of said cones,v a non-rotatable axially movable sleeve a pair of'bearing conesv having an inwardly converging conical surface, said other cone having a conical surface oppositely arranged -With respect to said 1irstmentioned surface, al cylindrical brake member. engaging said conical snrfaoes and adapted to engage the inner surface of the hub, an axially movable rotatable sleeve having means for engaging the hub to driveI the latter and a screw-thread oonnection With the driving member, and a slipringeonneoting said axially movable members together.

VIn testimony whereof We affix our signatures in presence of two Witnesses.-

f HENRY E. VANNESS'.

WILLIAM T. KNEALE.` Witnesses:

A. S. DIVEN, 'LEWIS HENRY.

Copies of this patent may 'be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C, 

